import java.util.Scanner;

public class Main9 {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        double money = in.nextDouble();
        double rate = in.nextDouble();
        int year = in.nextInt();
        ProfitCalculator pc = new ProfitCalculator();
        System.out.printf("%.2f", pc.calProfit(money, rate, year));
    }
}

/* 请在这里填写答案 */
class ProfitCalculator {
    double calProfit(double money, double rate, int year) {
        // 在这里实现函数
        rate = rate/100;
        double ans = money * Math.pow((1+rate),year);
        return ans;
    }
}